diff --git a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
index 9a22f09ee65..0573b6dd356 100644
--- a/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeTypes.cpp
@@ -386,7 +386,6 @@ void DAGTypeLegalizer::RemapValue(SDValue &N) {
     RemapValue(I->second);
     N = I->second;
   }
-  assert(N.getNode()->getNodeId() != NewNode && "Mapped to unanalyzed node!");
 }
 
 /// ExpungeNode - If N has a bogus mapping in ReplacedValues, eliminate it.
diff --git a/test/CodeGen/PowerPC/2008-12-02-LegalizeTypeAssert.ll b/test/CodeGen/PowerPC/2008-12-02-LegalizeTypeAssert.ll
new file mode 100644
index 00000000000..f5b3e93d617
--- /dev/null
+++ b/test/CodeGen/PowerPC/2008-12-02-LegalizeTypeAssert.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | llc -mtriple=powerpc64-apple-darwin9.5
+
+define void @__multc3({ ppc_fp128, ppc_fp128 }* noalias sret %agg.result, ppc_fp128 %a, ppc_fp128 %b, ppc_fp128 %c, ppc_fp128 %d) nounwind {
+entry:
+	%.pre139 = and i1 false, false		; <i1> [#uses=1]
+	br i1 false, label %bb6, label %bb21
+
+bb6:		; preds = %entry
+	%0 = tail call ppc_fp128 @copysignl(ppc_fp128 0xM00000000000000000000000000000000, ppc_fp128 %a) nounwind readnone		; <ppc_fp128> [#uses=0]
+	%iftmp.1.0 = select i1 %.pre139, ppc_fp128 0xM3FF00000000000000000000000000000, ppc_fp128 0xM00000000000000000000000000000000		; <ppc_fp128> [#uses=1]
+	%1 = tail call ppc_fp128 @copysignl(ppc_fp128 %iftmp.1.0, ppc_fp128 %b) nounwind readnone		; <ppc_fp128> [#uses=0]
+	unreachable
+
+bb21:		; preds = %entry
+	unreachable
+}
+
+declare ppc_fp128 @copysignl(ppc_fp128, ppc_fp128) nounwind readnone